bug#21489: 25.0.50; Echoing and message interaction (Bug#21489)

[Jay Belanger]

> I'm following up on <http://bugs.gnu.org/21489> dated 2015-09-15.
...
> This exercise was unrealistic enough that I expect we shouldn't be
> basing design decisions on it. That being said, for this particular
> use case the 25.0.50 behavior appears to be a minor improvement over
> 24.5.
>
> I suspect you filed this bug report because of some other,
> more-realistic code that behaves poorly with 25.0.50's echoing
> behavior. If so, could you please explain what the code is and what
> the misbehavior's symptoms are?

I think it had to do with getting help for prefixes from within Calc.
I don't recall the details, though, and I may have found a workaround
for the problem I was having.
At any rate, unless someone else wants to keep it open, the bug might as
well be closed.

Jay